/Engine/Plugins/NetcodeUnitTest/NetcodeUnitTest/Source/NetcodeUnitTest/Classes/ClientUnitTest.h
SeeUMinimalClient
bool SendRPCChecked ( [UObject](API\Runtime\CoreUObject\UObject\UObject) * Target, const TCHAR * FunctionName, void * Parms, int16 ParmsSize, int16 ParmsSizeCorrection )